3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php trait Tr { public function foo(int $x) {} } class Foo { use Tr; } $f = new Foo();
based on NeSKV

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Typed properties v2
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo has a deprecated constructor in /in/X2d9R on line 8 Fatal error: Uncaught TypeError: Argument 1 passed to Foo::foo() must be of the type integer, none given, called in /in/X2d9R on line 12 and defined in /in/X2d9R:4 Stack trace: #0 /in/X2d9R(12): Foo->foo() #1 {main} thrown in /in/X2d9R on line 4
Output for Arrow functions
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo has a deprecated constructor in /in/X2d9R on line 8 Fatal error: Uncaught ArgumentCountError: Too few arguments to function Foo::foo(), 0 passed in /in/X2d9R on line 12 and exactly 1 expected in /in/X2d9R:4 Stack trace: #0 /in/X2d9R(12): Foo->foo() #1 {main} thrown in /in/X2d9R on line 4
Output for Object typehint
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo has a deprecated constructor in /in/X2d9R on line 8 Fatal error: Uncaught ArgumentCountError: Too few arguments to function Foo::foo(), 0 passed in /in/X2d9R on line 12 and exactly 1 expected in /in/X2d9R:4 Stack trace: #0 /in/X2d9R(12): Foo->foo() #1 {main} thrown in /in/X2d9R on line 4
Output for Array change keys
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo has a deprecated constructor in /in/X2d9R on line 8 Fatal error: Uncaught TypeError: Argument 1 passed to Foo::foo() must be of the type integer, none given, called in /in/X2d9R on line 12 and defined in /in/X2d9R:4 Stack trace: #0 /in/X2d9R(12): Foo->foo() #1 {main} thrown in /in/X2d9R on line 4
Output for Lexical anon
Catchable fatal error: Argument 1 passed to Foo::foo() must be an instance of int, none given, called in /in/X2d9R on line 12 and defined in /in/X2d9R on line 4

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page